Onyx Security Raises $113 Mn Series B to Secure Enterprise AI Adoption

The funding comes just four months after the company came out of stealth mode with US$40 million in funding, including a US$5 million Seed round and a US$35 million Series A round.

With this latest investment, Onyx Security is now valued at around US$640 million. This is a major increase compared to the company's previous valuation showing strong investor confidence in its growth.

Onyx has built a platform that helps businesses use AI agents safely and at a large scale. It manages access permissions, monitors AI activit and helps prevent security risks linked to autonomous AI systems.

The new funding will be used to speed up the development of Onyx's next-generation AI models. The company will also expand its sales, business development, and marketing teams across the United States and other international markets.

"AI is reshuffling the cards across every industry, including cybersecurity. Every incumbent is vulnerable, and smaller companies have an opportunity to redefine the market," Bar Kogan said. "Our mission is to control AI. Trillions of dollars are being invested in AI, and the companies that help enterprises deploy it safely will be worth billions. Very few companies today can provide comprehensive control over AI agents."

Hila Zigman, General Partner at Cyberstarts, which led Onyx's Seed funding round, said that the rapid growth of AI agents is creating a completely new area in the cybersecurity industry.

"As AI agents become an integral part of critical enterprise workflows, organizations need to ensure they operate securely, consistently, and in accordance with corporate policies," Zigman said. "Onyx Security is building the control layer that will enable enterprises to adopt AI at scale. We believe this will become one of the most important cybersecurity categories of the coming decade."

Founded in 2024 by Maxim Bar Kogan and Gil Elbaz, Onyx Security helps businesses adopt and use AI safely. Its platform allows security, governance, and IT teams to manage how AI agents are used, keep them secure, ensure they follow company policies and track their performance from one place.

The platform is powered by Onyx's own AI technology and is already used by several Fortune 500 companies. The company's goal is to help businesses get the most value from AI while reducing security and compliance risks.